If last year was the summer of rose wine, this year, it’s cold brew season. The cafe on your corner probably has it on tap, bartenders are mixing up cocktails made with the stuff, and cold brew and tonic water "spritzers" have become the latest coffee geek craze. Even Starbucks recently took the hipster trend mainstream. We surveyed the field to find the best new options in the cold brew universe; here are three buzz-worthy innovations.